{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b88baab828713ce0b49b185444b2ee83bed373a8"
            },
            {
              "fixed": "a129b2b875c148aba233ace8447a0c36ca3bae07"
            },
            {
              "fixed": "196ce9e5e93202da097062be24e404984dbc5ac2"
            },
            {
              "fixed": "1101cbfe7f342e5eaaf7444965d4f1215abdac4c"
            },
            {
              "fixed": "c60033c172420179b7bbb3d1f843f8dc90164dc5"
            },
            {
              "fixed": "38a62306c4266bcb3cd89e33c7111ee33096ebb3"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.6.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.51"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89800.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau/uvmm: clear the dirty flag when unwinding an OP_UNMAP_SPARSE\n\nA successful OP_UNMAP_SPARSE marks its region dirty with\nnouveau_uvma_region_dirty() and defers the teardown to\nnouveau_uvmm_bind_job_cleanup(); it does not remove the region from\nuvmm-\u003eregion_mt.\n\nIf a later op in the job fails, the unwind path never clears reg-\u003edirty\n(set in one place, cleared nowhere) and sets op-\u003ereg = NULL, so cleanup\nskips the teardown. The region is left in the tree with dirty set and its\ncompletion never signalled. Later binds over that range then fail\npermanently -- -ENOENT or -EINVAL from the dirty checks, or an unkillable\nwait_for_completion() in bind_validate_region() -- for the lifetime of\nthe uvmm.\n\nClear reg-\u003edirty when the unwind reverts the sparse unmap, restoring the\nregion to the state it was found in.",
  "id": "CVE-2026-89800",
  "modified": "2026-09-17T03:31:03.631246017Z",
  "published": "2026-09-16T10:30:33.097Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1101cbfe7f342e5eaaf7444965d4f1215abdac4c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/196ce9e5e93202da097062be24e404984dbc5ac2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/38a62306c4266bcb3cd89e33c7111ee33096ebb3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a129b2b875c148aba233ace8447a0c36ca3bae07"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c60033c172420179b7bbb3d1f843f8dc90164dc5"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89800.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89800"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "drm/nouveau/uvmm: clear the dirty flag when unwinding an OP_UNMAP_SPARSE"
}